Tesla TMCBO225MA RCD/MCB Safety Switch RCBO 25 Amp 2 Pole 6kA 30mA Type A Switched Neutral

Description

Earth leakage, overload and short circuit, covered.

The Tesla TMCBO225MA is a two pole RCBO rated at 25 amps, pairing overcurrent protection with 30 mA Type A residual current sensing and a switched neutral. It does the work of a separate circuit breaker and RCD on the one final subcircuit, and it isolates both the active and the neutral conductor when it trips, keeping earth leakage protection dedicated to that circuit alone.

Key Features

• Rated current: 25 A
• Pole configuration: 1P + N, switched neutral
• Rated breaking capacity / Ics: 6000 A
• Residual current sensitivity: 30 mA
• Operating characteristics: Type A
• Rated voltage: 230/240 V AC
• Rated frequency: 50/60 Hz
• Overall width: 36 mm
• IP rating: IP20
• Mechanical endurance: 10000 cycles
• Electrical endurance: 4000 cycles
• Accepts rigid conductor up to 25 mm2
• Suits both comb and busbar connection
• Complies with IEC/EN AS/NZS 61009-1

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Why it Matters

One device, three jobs

An RCBO consolidates protection that would otherwise take two devices. The overcurrent element interrupts sustained overloads and short circuits. The residual current element watches the imbalance between active and neutral and disconnects on earth leakage at 30 mA, the sensitivity used for protection against direct contact by the human body. Because both functions live in one device, an earth fault drops only the affected circuit rather than everything downstream of a shared RCD.

Why the switched neutral matters

This is a 1P + N device, meaning the neutral is switched rather than solid-linked. When the RCBO opens, both conductors are broken. That gives genuine isolation of the circuit for testing and maintenance, and it removes the neutral as a return path while work is in progress. The device occupies 36 mm of width and carries an IP20 rating, suiting it to mounting inside an enclosed switchboard.

Type A sensing for modern loads

Type A residual current protection responds to sinusoidal AC residual currents and to pulsating DC residual currents. That distinction matters as more equipment on Australian sites runs through switch-mode power supplies, variable speed drives and electronic control gear. These loads can produce a residual current with a DC component that an AC-only device may not detect reliably, which is why Type A has become the default for new work.

Built for distribution work

Tesla lists this range for power distribution systems and for commercial and industrial installations. Terminals accept rigid conductor up to 25 mm2 and the device suits both comb and busbar connection, so it drops into a populated board without special preparation. Rated at 10000 mechanical cycles and 4000 electrical cycles, it tolerates the routine test-button operation that periodic verification requires. It complies with IEC/EN AS/NZS 61009-1, the Australian and New Zealand standard for RCBOs. The 25 A rating sits above general-purpose outlet and lighting duty but below the larger fixed-appliance ratings, and the same range runs from 6 A through to 40 A so a board can be populated from one consistent family.

Is the Tesla TMCBO225MA a circuit breaker or a safety switch?
It is both. An RCBO is a combination device, so the TMCBO225MA provides 25 A overcurrent protection and 30 mA residual current protection in a single unit.

Does this Tesla RCBO switch the neutral?
Yes. It is a 1P + N device with a switched neutral, so both the active and the neutral conductor are disconnected when the RCBO trips or is switched off.

What standard does the Tesla TMCBO225MA comply with?
The manufacturer states compliance with IEC/EN AS/NZS 61009-1, the standard covering residual current operated circuit breakers with integral overcurrent protection.

Warranty

This product is backed by an extended manufacturer warranty - click here for details.